on property
Events onThis is an ease-of-use accessor for event streams which should only be used when an explicit accessor is not available.
Source
Events get on => new Events(this);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-html/EventTarget/on.html